164621054199 has 24 divisors (see below), whose sum is σ = 255510370560. Its totient is φ = 94002948144.

The previous prime is 164621054189. The next prime is 164621054201. The reversal of 164621054199 is 991450126461.

It is not a de Polignac number, because 164621054199 - 2⁵ = 164621054167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164621054179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184309 + ... + 602670.

It is an arithmetic number, because the mean of its divisors is an integer number (10646265440).

Almost surely, 2^164621054199 is an apocalyptic number.

164621054199 is a deficient number, since it is larger than the sum of its proper divisors (90889316361).

164621054199 is a wasteful number, since it uses less digits than its factorization.

164621054199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788419 (or 788412 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 164621054199 in words is "one hundred sixty-four billion, six hundred twenty-one million, fifty-four thousand, one hundred ninety-nine".